by Q. Identify the cloud on the basis of the following characteristics relating to it:
UPSC CDS Examination (I) 2025 – General Knowledge
I. They look like cotton wool.
II. They exist in patches and have flat base.
III. They are generally formed at a height of 4 to 7 km.
Select the answer using the code given below:
(a) Cirrus
(b) Cumulus
(c) Nimbus
(d) Stratus
Answer: (b) Cumulus
Explanation:
Cumulus clouds are fluffy, white, cotton-like clouds with a flat base, generally formed at mid-altitudes (4–7 km). They appear in patches rather than covering the entire sky, distinguishing them from stratus or nimbus clouds.
Analysis of options:
- (a) Cirrus: High-altitude clouds (above 6 km), wispy, feathery appearance – does not match cotton-wool look.
- (b) Cumulus: Puffy, cotton-wool-like clouds, flat base, mid-altitude – matches all characteristics.
- (c) Nimbus: Rain-bearing clouds, dark, dense – does not match cotton-wool or patchy appearance.
- (d) Stratus: Layered, uniform clouds covering sky like a sheet – does not match puffy cotton-wool appearance.
Answer: (b) Cumulus
